Home / 821,570.80-1,232,356.20-379,202.80

Finding the Fourth Proportional to 821,570.80, 1,232,356.20 and 379,202.80

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Solution

The fourth proportional to 821,570.80, 1,232,356.20 and 379,202.80 is: 568,804.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,570.80 : 1,232,356.20 = 379,202.80 : x
  2. Step 2: Convert to fraction form
    821,570.80/1,232,356.20 = 379,202.80/x
  3. Step 3: Cross multiply
    821,570.80x = 1,232,356.20 × 379,202.80
  4. Step 4: Simplify right side
    821,570.80x = 467,312,921,637.36
  5. Step 5: Solve for x
    x = 467,312,921,637.36/821,570.80
  6. Step 6: Final answer
    x = 568,804.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.